Use sudo iwconfig wlan0
. Isso listará todos os parâmetros atuais.
auser@acomputer:~$ sudo iwconfig wlan0
wlan0 IEEE 802.11abg ESSID:"a.ssid"
Mode:Managed Frequency:2.462 GHz Access Point: 00:01:02:03:04:05
Bit Rate=54 Mb/s Tx-Power=15 dBm
Retry long limit:7 RTS thr:off Fragment thr:off
Encryption key:off
Power Management:off
Link Quality=58/70 Signal level=-52 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:114 Missed beacon:0